Pen holder



FIG. 1 is a top, front, left side perspective view of a pen holder showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom, right side, rear perspective view thereof;

FIG. 4 is a left side elevational view thereof, the right side elevational view being identical thereto; and,

FIG. 5 is a front view thereof, the rear view being identical thereto. 

The ornamental design for a pen holder, as shown and described. 